[gradsusr] Wind-chill parameter GrADS -

[Leopoldo Alvarez]

Hi Willians,

- [1] I used your formulation but using degrees Celsius (ºC) and KPH... 
I don´t know if it is valid...
Now temperature is more low...mmmh

'define chill = 
35.74+0.6215*(t-273.15)-35.75*pow((tg1*3.6),0.16)+0.4275*(t-273.15)*pow((tg1*3.6),0.16))'

  Date / wind (KPH) / temp (ºC) / windchill (ºC)
2014-FEB-19-13Z  27.5996  18.8929   0.426981
2014-FEB-19-14Z  31.2976  19.2836   0.00337819
2014-FEB-19-15Z  31.2976  19.0446  -0.322477


-[2] In other formulation the difference was less ...
http://www.wrfems.info/viewtopic.php?f=6&t=742
- 'tg2' is wind variable (KPH)
'define wis=pow((tg2),0.16)'
'define windchill = 13.112 + 0.6215*(t-273.15) - 11.37*wis + 
0.3965*(t-273.15)*wis'
'd windchill'

here I find little difference, I wonder...

  Date / wind (KPH) / temp (ºC) / windchill (ºC)
2014-FEB-19-13Z  27.5996  18.8929  18.2582
2014-FEB-19-14Z  31.2976  19.2836  18.6358
2014-FEB-19-15Z  31.2976  19.0446  18.3228

If your test this web with my data [2], is similar windchill..
http://www.csgnetwork.com/windchillcalc.html

Best,

Leopoldo
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